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CVE-2026-111898 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

phpMyFAQ 4.2.0-alpha before 4.2.0-beta contains an authentication bypass vulnerability that allows Keycloak users to take over local accounts by matching preferred_username or email. Attackers controlling a Keycloak identity with a colliding username or unverified email can log in through /auth/keycloak/authorize to bind their subject and gain superadmin privileges.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:6.8 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-rg4w-2j3r-2hhp	CISA-ADP	AdvisoryExploitRemedyVendor
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-rg4w-2j3r-2hhp	[email protected]	AdvisoryExploitRemedyVendor
https://www.vulncheck.com/advisories/phpmyfaq-4.2.0-alpha-before-4.2.0-beta-account-takeover-via-keycloak-implicit-account-linking	[email protected]	Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-287	Improper Authentication	[email protected]

Affected Products

Product	Versions
phpMyFAQ	>= 4.2.0-alpha, < 4.2.0-beta (semver)
CPE cpe:2.3:a:phpmyfaq:phpmyfaq:::::::: Remediation Upgrade: 4.2.0-betamoderate effort

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 18, 2026	CVE Modified	CISA-ADP
Oct 17, 2026	New CVE Received	[email protected]